<template>
  <div class="grand-child">
    <h3>孙组件</h3>
    <h4>a:{{ a }}</h4>
    <h4>b:{{ b }}</h4>
    <h4>c:{{ c }}</h4>
    <h4>d:{{ d }}</h4>
    <h4>x:{{ x }}</h4>
    <h4>y:{{ y }}</h4>
    <button @click="updateA(1)">点我将爷爷组件的a值加1</button>
  </div>
</template>

<script setup lang="ts" name="GrandChild">
// 接收父组件使用 v-bind="$attrs" 传递的的数据
defineProps(["a", "b", "c", "d", "x", "y", "updateA"]);
</script>

<style scoped>
.grand-child {
  margin-top: 20px;
  background-color: orange;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px black;
}
</style>
